Jawaban:

16. Margaret Mead studied many different cultures and she was one of the first anthropologists to photograph hers subjects. (harusnya her)

17. Talc, a soft mineral with a variety of uses, sold is in slabs or in powdered form. (is sold)

18. During the 1870’s ironworkers in Alabama proved they could produce iron by burning iron ore with coke, instead than with charcoal. (harusnya rather)

19. Geologists at the Hawaiian Volcano Observatory rely on a number of instruments to studying the volcanoes in Hawaii. (harusnya to study)

20. Underlying aerodynamics and all other branches of theoretical mechanics are the laws of motion who were developed in the seventeenth century. (harusnya that)

21. Was opened in 1918, the Philips Collection in Washington, D.C., was the first museum in the United States devoted to modern art. (harusnya tanpa was)

22. A mortgage enables a person to buy property without paying for it outright; thus more people are able to enjoy to own a house. (harusnya owning)

23. Alike ethnographers, ethnohistorians make systemic observations, but they also gather data from documentary and oral sources. (harusnya unlike)

24. Basal body temperature refers to the most lowest temperature of a healthy individual during waking hours. (harusnya tanpa most)

25. Research in the United States on acupuncture has focusedonit use in pain relief and anesthesia. (harusnya its)

26. The Moon’s gravitational field cannot keep atmospheric gases from escape into space. (harusnya from escaping)

27. Although the pecan tree is chiefly value for its fruit, its wood is used extensively for flooring, furniture, boxes, and crates. (harusnya valued)

28. Born in Texas in 1890, Katherine Porter produced three collection of short stories before publishing her well-known novel Ship of Fools in 1962. (harusnya collections)

29. Insulation from cold, protect against dust and sand, and camouflage are among the functions of hair for animals. (harusnya protection)

30. The notion that students are not sufficiently involved in their education is one reason for the recently surge of support for undergraduate research. (harusnya recent)